How to Check Whether a Proportion Is True or False

[David23]

To check whether a proportion is true or false, compare the cross products of the two ratios. For example, print 4/6 = 10/15, multiply 4 × 15 and 6 × 10; since both equal 60, the proportion is true. When you want a faster way to verify the result, a proportion calculator can compare the cross products automatically and clearly show whether the ratios are equivalent. You can also use a proportion solver when working with a missing value, while the calculator's verification step helps confirm that the completed equation is correct.